23×115mm

23×115mm
23×115mm shells used inNR-23 cannonon theIl-28
Type	Autocannon, Antiaircraft
Place of origin	Soviet Union
Service history
In service	c.1944-present
Used by	USSR, various formerEastern Bloccountries
Production history
Designer	OKB-16
Designed	1943
Specifications
Parent case	14.5×114mm
Case type	Rimless, bottlenecked
Bullet diameter	23 mm (0.91 in)
Neck diameter	24 mm (0.94 in)
Shoulder diameter	26.26 mm (1.034 in)
Base diameter	26.95 mm (1.061 in)
Rim diameter	26.95 mm (1.061 in)
Case length	115 mm (4.5 in)
Overall length	204 mm (8.0 in)
Maximum pressure	294.3 MPA
Ballistic performance
Bullet mass/type Velocity Energy 175 g (2,701 gr) HEI 740 m/s (2,400 ft/s) 47,900 J (35,300 ft⋅lbf)

The23×115mmround is used in Soviet (USSR)/Russian/CISaircraftautocannon.Although superseded by the30×165mmround theRussian Air Forcestill uses it in theGSh-23L(in the aircraft's tail turrets and in theUPK-23-250gun pod) and theGSh-6-23(in theSu-24). This round still serves in many countries and is widely available. The projectile weight is 175 grams.

History

The round was derived from the14.5×114mmround by necking it out to 23 mm.The original rounds used a lower power charge of 33 g of sw 4/7 powder and achieved 690 m/s at a maximum pressure of 294.3 MPa. In 1954 an improved ammunition was introduced, featuring better projectile design and ballistic properties. The newer rounds have a powder charge to achieve 720 m/s.

Weapon platforms

• Nudelman-Suranov NS-23,used in theAn-2,Il-10,Il-22,La-9,La-11,La-15,MiG-9,Yak-7,Yak-9U,Yak-15,Yak-17,andYak-23fighters; and in theMi-2US, Mi-2URN, and Mi-2URPhelicopters.
• Nudelman-Rikhter NR-23,used in theMiG-15,MiG-17,andLa-15fighters.
• Afanasev Makarov AM-23,used in theTu-16,Tu-95,Il-54bombers; and in theAn-8,An-12,Il-76transports.
• Gryazev-Shipunov GSh-23,used in theMiG-21,MiG-23,SOKO J-22 Orao,HAL Tejas,andIAR 93fighters; in theTu-22MandTu-95bombers; in theMi-24V, Mi-24VP, Mi-24VM, Mi-24VN, Mi-24VU, Mi-35, Mi-35M, Mi-35O,andW-3WA Sokółhelicopters; and in theIl-76transport; and inUPK-23-250andSPPU-22gun pods.
• Gryazev-Shipunov GSh-6-23,used in theSu-15,Su-24,MiG-31,and early versions of theMiG-27fighters.

See also

• 23×152mm,one variant used in theVYa-23on theIlyushin Il-2ground attack aircraft,and a different variant in the later Sovietanti-aircraftautocannonseries (ZSU-23-4,ZU-23,etc.)

References

Notes

Sources

• Koll, Christian (2009).Soviet Cannon - A Comprehensive Study of Soviet Arms and Ammunition in Calibres 12.7mm to 57mm.Austria: Koll. p. 131.ISBN978-3-200-01445-9.

External links

• An example of three 23mm NS/NR series cartridges
• Quarry.co.ukArchived2015-09-24 at theWayback Machine
• Airforce.ru